Firestop/ Fire Barrier/ intumescent Acrylic Sealant
Selsil Fire resistant acrylic sealant is one component, acrylic emulsion based and specially formulated for being barrier against fire.
Properties
▪ Water based, contains no asbestos or fibres
▪ Easy application
▪ Short surface curing
▪ Paintable
▪ Good adhesion to concrete and masonry substrates
▪ Flexible
Technical Information
Chemical Base: Acrylic based intumescent compound containing organic fillers
Color: White
Specific gravity: 1,56±0,03 g/cm³
(DIN 53479)
Tack free time: 15-25 min.
(25ºC and 50% R.H)
Cure Rate: 2 mm/24 hour
(25ºC and 50% R.H)
Fire Rate Test: See Report No: 18-14847-115-1
How to Use Firestop sealant
Application Temperature: +5 °C to +35 °C
The application surface must be solid, clean, dry and free of dust, oil and Grease.
Suitable for below applications;
• Precast panel joints
• Control joints in masonry blockwork
• Sealing around metal ducting/pipework etc.
Uses of Acrylic FR Sealants
- Interior fire-resistant applications
- Fire-resistant sealing compound for cracks in concrete and plaster
- Fire-resistant connection joints in the building industry
- Fire-resistant joints with movements up to 10%.
Packaging
290 ml x 25 per box
Shelf Life
Store the product in a cool and dry place.
The shelf life is 12 months at temperatures between +5°C and +25°C
Caution
Keep out of reach of children. Avoid contact with skin and eyes. Use gloves before application. Keep out of freezing, direct sunlight and temperatures above 40°C
Health and Safety
For more information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing, physical, ecological, and toxicological and other safety related data.
What is a Firestop sealant
There is one important element in firestop materials that makes them different from so many other sealants is the way they behave in a fire. Of course the “secret sauce” that goes into the product that makes them more expensive than other sealants also. The key element in many, but not all, firestop products is their capacity to expand when the product is exposed to the heat seen in a fire scenario. The industry lingo is intumescent. When looking at the sealants used in firestop they are either used in joint applications so they need to allow for movement, or they are used in through penetrations in which case many applications will require an intumescent product.
Types of Fire Sealants
- Acrylic Firestop Sealants: Based on acrylic polymers, low in cost, excellent sealing capability.
- B1 FR Silicone sealants: Silicone sealant, excellent sealaing and good bonding capability.
- B1FR PU Foam Sealants: Expandable foam spray sealants with FR approval. Can fill large gaps, excellent bonding & sealing capbilities.
Firestop Sealants
are used to seal small openings/gaps through penetrants (such as civil pipes, ducts, electrical cables, etc.) passing through walls or floors in buildings. The purpose of fire sealants is to seal any small openings (up to 2-4 cm in diameter) so as to prevent a fire from traveling from a fire area/compartment to another area/compartment of a building or structure. Fire Sealants have a fire rating which indicates the time it will stop fire for. Any passive fire product will have a fire rating of up to a maximum of 4 hours.
There are different types of Fire Sealants used for their individual properties. Firestop Sealants can be silicone, ablative or intumescent. They can be elastomeric which indicates their expansion or movement capability from 25% – 50%.
Silicone Firestop Sealants are elastic, maintain stability in high & low temperatures and is resistant to other chemicals, moisture, and weathering. Unlike some adhesives, siliconesealants must cure.
Ablative FireStop Sealants absorb the energy of a fire to protect what is underneath, buying valuable time. They work by consuming heat energy from fire, releasing it in the form of gases as they char to form insulation.
Intumescent Firestop Sealants are used mainly around plastic pipes/materials that penetrate through walls and floors. Intumescents swell as a result of heat exposure, thus increasing in volume and decreasing in density. Intumescent sealants are ideal for use with plastic materials/pipes as the intumescent material is used in accordance with the diameter of a pipe so as to assure that the expansion of the intumescent material is wide enough to seal the opening of the pipe diameter.
What else to look for in a firestop sealant? Based on the use or application, determine the type of sealant required. Look at the fire rating of a sealant, the fire tests conducted on the specific product/brand of firestop sealant to assure that a fire stop sealant has been tested in fire conditions as per the relevant test standards that apply in your respective country. It is imperative that the sealant is applied exactly as per the manufacturer’s instructions to ensure it works under fire conditions.
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